The green sand on the beach is composed primarily of olivine crystals which erode out of lava flows. The crystals are heavier than most sand types on the beach and remain behind when lighter sand grains are washed away by strong wave activity.
Green Sand in Kourou, French Guiana
Geothermal landscape and volcanic caldera, Kuril Islands, Sakhalin Oblast (source: Bing Wallpaper Archive)
The Kuril Islands form a volcanic island archipelago that stretches approximately 1,300 km northeast from Hokkaido, Japan, to Kamchatka, Russia. The 56 islands chain has around 100 volcanoes, some 40 of which are active.
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Yangtze River is the largest in China and the third largest in the world with a length of 3,915 miles. Stretching from a land of remote mountains and arid plains in Tibet, it winds its way through canyon gorges to fertile regions of connecting lakes and waterways. The Yangtze’s gorges are the highlights on the river’s course. And of course there is the Three Gorges Dam, the largest dam and hydroelectric power plant in the world.
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Fenhuang is an old town in Hunan province, China, with a history spanning 1,300 years, and architecture dating back to the Ming and Qing dynasties. It is well-known for its stilt houses, folk culture, ethnic groups and fantastic landscape. The town is placed in a mountain setting, incorporating the natural flow of water into city layout. Fenghuang means Phoenix in Chinese language and it represents good omen and longevity in Chinese mythology.
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Excelsior Geyser Crater drains into the nearby Firehole River. The river was named by early trappers for the steam that makes it appear to be smoking as if on fire.
Lake Retba in Senegal (image source)
These pink lakes are a natural phenomenon, the result of certain algae found in sea salt fields. When the temperature is high enough and adequate light conditions are provided, the algae-rich waters will turn rose pink and sometimes, even red.
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Horsetail Fall, located in Yosemite National Park in California, is a seasonal waterfall that flows in the winter and early spring. The fall occurs on the east side of El Capitan. If Horsetail Fall is flowing in February and the weather conditions are just right, the setting sun illuminates the waterfall, making it glow orange and red. When that happens, the waterfall will glow orange for about 10 minutes. This natural phenomenon is often referred to as the “Firefall”.
By Wcwoolf (Own work) [CC BY-SA 4.0], via Wikimedia Commons
Borgund Stave Church
It was built sometime between 1180 and 1250 AD with later additions and restorations. Its walls are formed by vertical wooden boards or staves. The four corner posts were connected to one another by ground sills, resting on a stone foundation. The rest of the staves then rise from the ground sills, each stave notched and grooved along the sides so that they lock into one another, forming a sturdy wall. (image source)
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The original Wat Rong Khun or the White Temple by the end of the 20th century, was in a bad state of repair. Funds were not available for renovation. Chalermchai Kositpipat, a local artist from Chiang Rai, decided to completely rebuild the temple and fund the project with his own money.
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